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Tholeiitic basalt — is an igneous rock, a type of basalt. Like all basalt, the rock type is dominated by clinopyroxene plus plagioclase, with minor iron titanium oxides. [http://micro.magnet.fsu.edu/primer/techniques/polarized/gallery/pages/basalttholeiiticsmall.html… … Wikipedia

Superior craton — in the west. The western margin extends from northern Minnesota through eastern Manitoba to northwestern Ontario.The formation of the Superior craton is best explained within the context of 2.72 2.68 Ga accretion of small continental plates and… … Wikipedia

igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium

Basalt — For the World War II raid, see Operation Basalt. For the cities, see Basalt, Colorado and Basalt, Idaho. Basalt Igneous Rock Composition … Wikipedia

Picrite basalt — or oceanite from the Piton de la Fournaise Picrite basalt, picrobasalt or oceanite[citation needed] is a variety of high magnesium olivine basalt that is very rich in the miner … Wikipedia

Slave craton — which is one of the oldest dated rock units on Earth at 4.03 Ga. The crust of the Slave craton is thought to have amalgamated during a 2.69 Ga collision between a proto Slave western basement complex, known as the Central Slave Basement Complex,… … Wikipedia

Fundy Basin — The Fundy Basin is a sediment filled rift basin on the Atlantic coast of southeastern Canada. It contains three sub basins; the Fundy sub basin, the Minas Basin and the Chignecto Basin. [ [http://www.searchanddiscovery.net/documents/2008/08006moro… … Wikipedia